Smart Contract Lottery Ticket With Encrypted Prize Code Redemption
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Solution Overview
Problem
Conventional physical instant lottery tickets are prone to loss, theft, damage, and require physical redemption, lacking security and convenience.
Innovation Solution
Implementing a Smart Contract Instant Lottery Ticket (SILT) on a digital ledger using blockchain technology, which encrypts prize codes and utilizes smart contracts to manage ticket issuance, transfer, and redemption, ensuring security and convenience through digital means.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If physical instant lottery tickets are used, then the user experience is familiar and simple, but the tickets are prone to loss, theft, damage, and require physical redemption
Solution Approach 1:
The patent creates a digital copy of the physical lottery ticket using blockchain technology. The digital ticket contains all essential information (ticket ID, prize code, owner address) and functions identically to the physical ticket but with enhanced security features. The smart contract on the blockchain serves as an immutable digital record that cannot be lost, stolen, or damaged like physical tickets.
Solution Approach 2:
The patent replaces the mechanical/physical ticket system with a digital blockchain-based system. Instead of physical paper tickets that require manual handling and redemption, the system uses cryptographic keys, smart contracts, and blockchain ledgers to automate ticket management, verification, and prize distribution entirely through digital means.
2Reliability
If physical lottery tickets are manufactured with security precautions, then ticket fraud is avoided, but printing and distribution costs increase
Solution Approach 1:
The patent eliminates the need for physical ticket manufacturing by creating digital representations on the blockchain. Instead of incurring printing, paper, and distribution costs, the system generates digital tickets through smart contracts that cost only the minimal blockchain transaction fees, while maintaining or enhancing security through cryptographic methods.
Solution Approach 2:
The patent replaces the physical manufacturing and distribution infrastructure with a digital system. The blockchain network itself serves as the issuance and distribution mechanism, eliminating the need for physical printing presses, paper supplies, and logistics networks, thereby dramatically reducing operational costs.
3Loss of information
If prize codes are encrypted on digital lottery tickets, then confidentiality is maintained until scratched, but the system complexity increases
Solution Approach 1:
The patent extracts the encryption and decryption functions into a dedicated Key Issuer smart contract, separating this complex cryptographic operation from the main ticket issuance logic. The prize codes are encrypted using public keys stored on-chain, and only the Key Issuer holding the corresponding private key can decrypt them, thereby managing complexity through functional decomposition.
Solution Approach 2:
The patent introduces a Key Issuer as an intermediary entity (implemented as a smart contract) that manages the cryptographic keys. This intermediary handles all encryption and decryption operations, shielding the complexity of cryptographic protocols from the rest of the system and providing a clean interface for ticket issuance and redemption.
Data Source
AI summary
A ticket issuer server provides a digital instant lottery ticket, such as a smart contract instant lottery ticket (SILT) on a digital ledger, such as a blockchain infrastructure that supports execution of smart contracts. The ticket issuer server obtains an encryption key from a key issuer, encrypts a prize code with the encryption key to provide an encrypted prize code, creates an object, such as a smart contract representing the SILT, wherein the smart contract includes a ticket owner address attribute, a ticket issuer address attribute, a key issuer address attribute and the encrypted prize code, and stores the object on the digital ledger.